There’s no time for social media when you’re studying hard! That seems to be the case for Amanda Bynes, at least, who is currently taking classes at the Fashion Institute of Design and Merchandising.

The actress, who previously made headlines for her bizarre tweets in 2013, has had minimal activity on the social networking site since completing treatment in December. On Thursday, though, she took to her Twitter account for the first time in over a month to share a new photo.

“Me and my beautiful sister @jilly_joyce,” she captioned the pic, in which she poses alongside her sibling. In the shot, the 28-year-old looks healthy and happy in black shorts and matching peplum top.

Since her return to Twitter, Amanda has shared bikini photos of herself from Spring Break, as well as snapshots of some of her designs from school.